大约有 42,000 项符合查询结果（耗时：0.0647秒） [XML]
Javascript calculate the day of the year (1 - 366)
How do I use javascript to calculate the day of the year, from 1 - 366? For example:
22 Answers
...
Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
... |
edited Dec 21 '16 at 0:33
answered Mar 13 '12 at 19:48
A...
Get index of array element faster than O(n)
...
|
edited Feb 13 '13 at 0:37
answered Jun 5 '11 at 10:41
...
LINQ where vs takewhile
...d find all elements matching the condition
var intList = new int[] { 1, 2, 3, 4, 5, -1, -2 };
Console.WriteLine("Where");
foreach (var i in intList.Where(x => x <= 3))
Console.WriteLine(i);
Console.WriteLine("TakeWhile");
foreach (var i in intList.TakeWhile(x => x <= 3))
Console....
Getting key with maximum value in dictionary?
...
632
You can use operator.itemgetter for that:
import operator
stats = {'a':1000, 'b':3000, 'c': 10...
Base64: What is the worst possible increase in space usage?
...the size of the base-64 representation of a string of size n is:
ceil(n / 3) * 4
So, for a 16kB array, the base-64 representation will be ceil(16*1024/3)*4 = 21848 bytes long ~= 21.8kB.
A rough approximation would be that the size of the data is increased to 4/3 of the original.
...
How to print without newline or space?
...
In Python 3, you can use the sep= and end= parameters of the print function:
To not add a newline to the end of the string:
print('.', end='')
To not add a space between all the function arguments you want to print:
print('a', 'b'...
Append column to pandas dataframe
...
135
It seems in general you're just looking for a join:
> dat1 = pd.DataFrame({'dat1': [9,5]})
...
Why is a 3-way merge advantageous over a 2-way merge?
Wikipedia says a 3-way merge is less error-prone than a 2-way merge, and often times doesn't need user intervention. Why is this the case?
...
How do I clear a search box with an 'x' in bootstrap 3?
...
To get something like this
with Bootstrap 3 and Jquery use the following HTML code:
<div class="btn-group">
<input id="searchinput" type="search" class="form-control">
<span id="searchclear" class="glyphicon glyphicon-remove-circle"></span&g...